mg: fix parsing of tag files with duplicate entries

Instead of erroring out ignore duplicates. Fixes using /var/db/libc.tags
again.

ok op

diff --git a/usr.bin/mg/tags.c b/usr.bin/mg/tags.c
index 0e44c0f..41684a8 100644 (file)
--- a/usr.bin/mg/tags.c
+++ b/usr.bin/mg/tags.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: tags.c,v 1.23 2023/03/22 22:09:37 op Exp $    */
+/*     $OpenBSD: tags.c,v 1.24 2023/03/28 21:33:21 tb Exp $    */
 
 /*
  * This file is in the public domain.
@@ -388,8 +388,10 @@ addctag(char *s)
        if (*l == '\0')
                goto cleanup;
        t->pat = strip(l, strlen(l));
-       if (RB_INSERT(tagtree, &tags, t) != NULL)
-               goto cleanup;
+       if (RB_INSERT(tagtree, &tags, t) != NULL) {
+               free(t);
+               free(s);
+       }
        return (TRUE);
 cleanup:
        free(t);